Ordinance 807-81 - Laserfiche WebLink

Exception: Where acceptable to the authority having jurisdiction, the use of • other than on-site fuels shall be permitted when there is a low probability of a simultaneous failure of both the off-site fuel delivery system and power from the outside electrical utility company. (4) Where the means of starting the prime mover is a storage battery, it shall be suitable for the purpose and shall be equipped with an automatic charging means. (5) Generator sets which require more than 10 seconds to develop power are acceptable providing an auxiliary power supply will energize the emergency system until the generator can pick up the load. See Section 700-4 for test and maintenance requirements. (c) Uninterruptible Power Supplies. Uninterruptible power supplies used to provide power for emergency systems shall comply with the applicable provision of Section 700-12 (a) and (b). (d) Separate Service. Where acceptable to the authority having jurisdiction, a second service shall be permitted. This service shall be in accordance with Article 230, with separate service drop or lateral, widely separated electrically and physically from the normal service to minimize the possibility of simultaneous interruption of supply. (e) Connection Ahead of Service Disconnecting Means. Where acceptable to the authority having jurisdiction, connections ahead of, but not within, the main service disconnecting means shall be permitted. The emergency service shall be sufficiently separated from the normal main service disconnecting means to prevent simultaneous interruption of supply through an occurrence within the building or groups of buildings served. See Section 230-82 for equipment permitted on the supply side of a service disconnecting means. (f) Unit Equipment. Individual unit equipment for emergency illumination shall consist of: (1) a rechargeable battery; (2) a battery charging means; (3) provisions for one or more lamps mounted on the equipment and/or shall be permitted to have terminals for remote lamps; and (4) a relaying device arranged to energize the lamps automatically upon failure of the supply to the unit equipment. The batteries shall be of suitable rating and capacity to supply and maintain at not less than 87f4 percent of the nominal battery voltage for the total lamp load associated with the unit for a period of at least 114 hours, or the unit equipment shall supply and maintain not less than 60 percent of the initial emergency illumination for a period of at least 1)4 hours. Storage batteries, whether of the acid or alkali type, shall be designed and constructed to meet the requirements of emergency service. Unit equipment shall be permanently fixed in place (i.e., not portable) and shall have all wiring to each unit installed in accordance with the requirements of any of the wiring methods in Chapter 3. Flexible cord- and plug-connection shall be permitted provided that the cord does not exceed 3 feet (914 mm) in length. The branch circuit feeding the unit equipment shall be the same branch circuit as that serving the normal lighting in the area and connected ahead of any local switches. Emergency illumination fixtures that obtain power from a unit equipment and are not part of the unit equipment shall be wired to the unit equipment as required by section 700-9 and by one of the wiring methods of Chapter 3. be and the same is hereby amended to read as follows: